Measuring shear viscosity using transverse momentum correlations in relativistic nuclear collisions

被引：126

作者：

Gavin, Sean

Abdel-Aziz, Mohamed

机构：

[1] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48202 USA

[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.97.162302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Elliptic flow measurements at the Brookhaven National Laboratory Relativistic Heavy Ion Collider suggest that quark-gluon fluid flows with very little viscosity compared to weak-coupling expectations, challenging theorists to explain why this fluid is so nearly "perfect." It is therefore vital to find quantitative experimental information on the viscosity of the fluid. We propose that measurements of transverse momentum fluctuations can be used to determine the shear viscosity. We use current data to estimate the viscosity-to-entropy ratio in the range from 0.08 to 0.3 and discuss how future measurements can reduce this uncertainty.

引用

页数：4

共 24 条

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